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Chemistry

Chemistry
The gas used for artificial ripening of green fruit is

carbon dioxide
ethylene
ethane
acetylene

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Chemistry
The most abundant element is

Calcium
Oxygen
Silicon
Nitrogen

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Chemistry
When quick lime is added to water

No heat change takes place
Heat is liberated
Heat is absorbed
Temperature decreases

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Chemistry
Inert gases are

Chemically unreactive
Miscible with water
Not stable
Chemically very active

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Chemistry
Mixture can be

Homogeneous
Pure substance
Both A and B
Heterogeneous

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Chemistry
The resources which can be used continuously, year-after -year are called

Biotic
Abiotic
Non-renewable
Renewable

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